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Cheap flights from Houston to Porto (OPO)

HOU — OPO
Nov 14 — Nov 211
Sat 11/14
Sat 11/21
1 adult, Economy
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Popular in

July

Cheapest in

January

Average price

$889
Highest demand for flights based on searches. 22% potential increase in price ($277 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($33 potential savings vs. average RT price).
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Average for round-trip flights in October 2026
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Best time to book a flight from Houston to Porto

Have a flexible travel schedule? Discover the best time to fly to Porto from Houston with our price prediction graph.
Estimated round-trip price

Cheapflights Insights

Everything you need to know about your flight from Houston to Porto

What is the cheapest month to book a flight from Houston to Porto?

Currently, January is the cheapest month in which you can book a flight from Houston to Porto (average of $682). Flying from Houston to Porto in December is currently the most expensive (average of $1,345). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Porto

Peruse reviews from past customers who have flown with KLM,Delta, andUnited Airlines from Houston to Porto to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,587 reviews

Overall

7.8

Food

7.3

Comfort

7.7

Boarding

7.8

Entertainment

7.2

Crew

8.4

Reviews

1 / 20
4.0
Okay

Abhisek,Aug 2026

JFK - AMS

They didn’t offer any options for breakfast and had only one option which was cold meat and cheese. I would expect at least one more option in premium economy
KLM
7.8
Good
1,587 reviews
KLM
7.8
Good
1,587 reviews

Overall

7.8

Food

7.3

Comfort

7.7

Boarding

7.8

Entertainment

7.2

Crew

8.4

Reviews

1 / 20
4.0
Okay

Abhisek,Aug 2026

JFK - AMS

They didn’t offer any options for breakfast and had only one option which was cold meat and cheese. I would expect at least one more option in premium economy
Delta
7.8
Good
8,650 reviews
KLM
7.8
Good
1,587 reviews

Overall

7.8

Food

7.3

Comfort

7.7

Boarding

7.8

Entertainment

7.2

Crew

8.4

Reviews

1 / 20
4.0
Okay

Abhisek,Aug 2026

JFK - AMS

They didn’t offer any options for breakfast and had only one option which was cold meat and cheese. I would expect at least one more option in premium economy
United Airlines
7.4
Good
10,362 reviews
KLM
7.8
Good
1,587 reviews

Overall

7.8

Food

7.3

Comfort

7.7

Boarding

7.8

Entertainment

7.2

Crew

8.4

Reviews

1 / 20
4.0
Okay

Abhisek,Aug 2026

JFK - AMS

They didn’t offer any options for breakfast and had only one option which was cold meat and cheese. I would expect at least one more option in premium economy

Related info for your journey

  • What airport do you fly into for flights to Porto from Houston?

    If you book a flight to Porto from Houston, you will be flying to Porto, which is the city’s only airport. Porto (OPO) is located 6.8 mi from the center of Porto. There are 0 flights from Houston to Porto per day from 3 different airlines.

  • What are the cheapest airlines flying from Houston to Porto round-trip?

    Flying on KLM is currently your cheapest option to Porto, with prices starting at $476. Additional round-trip tickets that might be worth considering are offered by Delta and United Airlines, with the lowest prices starting at $484 and $695, respectively. These flights start at 50% lower than the current average price 3 months from now.

  • Can I find deals for flights from Houston to Porto that include hotel bookings?

    Yes. In addition to deals on Houston to Porto flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Houston to Porto?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Houston to Porto.

  • Can I find deals for business class flights from Houston to Porto?

    Yes. Cheapflights offers flight deals from Houston to Porto by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Houston to Porto?

    Currently, January is the cheapest month in which you can book a flight from Houston to Porto (average of $682). Flying from Houston to Porto in December is currently the most expensive (average of $1,345). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Porto?

Book flights to Porto if you plan to visit one of these locations
Vila Nova de Gaia
Arcos de Valdevez
Coimbra
Aveiro

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Top 3 airlines flying from Houston to Porto

AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$476Average$846FlexibilityNo cancel feeOn-time75%
DeltaCheapest$484Average$970FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$695Average$1,183FlexibilityNo cancel feeOn-time69%

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